[T3] Oil pump sizes

[Andy Vaughan <editthis@pacbell.net>]

So, I'm flummoxed.

Basics: My engine has a replacement case from 1973, align-bored .010 over,
and I'm attempting to full-flow the case. The case is tapped, and ready to
go, but I have "information conflict" happening over the size of the oil
pump.

Here are the arguments:
My local VW shop owner tells me that I MUST have a 30mm pump for a case
that's .010 over to maintain correct oil pressure throughout the system. Add
a spin-on filter and extra lines, and I suppose that makes sense, BUT....

Aircooled.net has a billboard-sized warning about running 30mm oil pumps in
T3 applications because they'll blow the cooler seals. They (he) recommends
either I modify the oil pressure valves, but doesn't say how, or I just use
the 26mm pump.

"But, but, but....."

Any wisdom to pass on?

Thanks for all of your help.

av



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